import { Component, OnInit } from '@angular/core';
import { Router } from '@angular/router';

import { Hero } from './hero';
import { HeroService } from './hero.service'



@Component({
  selector: 'my-heroes',
  templateUrl: './heroes.component.html',
  styleUrls: ['./heroes.component.css']
})
export class HeroesComponent implements OnInit {
  title = 'Tour of Heroes';
  selectedHero: Hero;
  heroes: Hero[];
  onSelect(hero: Hero): void {
    this.selectedHero = hero;
  };

  constructor(private heroService: HeroService,private router:Router) {

  };
  getHeroes(): void {
    this.heroService.getHeroes().then(heroes => {
      this.heroes = heroes
    });
  };
  ngOnInit() {
    this.getHeroes();
  };
  gotoDetail():void{
    this.router.navigate(['/detail', this.selectedHero.id]);
  };
  add(name: string): void {
    name = name.trim();
    if (!name) { return; }
    this.heroService.create(name)
      .then(hero => {
        this.heroes.push(hero);
        this.selectedHero = null;
      });
  };
  delete(hero: Hero): void {
    this.heroService
        .delete(hero.id)
        .then(() => {
          this.heroes = this.heroes.filter(h => h !== hero);
          if (this.selectedHero === hero) { this.selectedHero = null; }
        });
  };
}
